Menu
▾
▴
#509 GeoImage and RasterImageLayer : why JAI
GeoImage and RasterImageLayer process image using JAI :
It crops and scales the visible part of the image. See also ticket 507.
This ticket is about the choice of JAI to rescale the image. Following baeldung post https://www.baeldung.com/java-resize-image i tried with awt and graphics2D and rescaling seems to be much faster.
Maybe JAI has a richer api for those who want more complex processing, but graphics2D propose several kind of interpolation through the RenderingHints, which may be enough.
To be tested further after the move to github.
the use of JAI operations saves memory afaik. . it ideally creates a chain from loading over computing to rendering.
the scaling you mention above seems to use BufferedImage in memory, which of course is faster but needs the whole source image in memory. for cases like Sextante, where images are currently held in memory anyway this may not be a limiting factor so i'm all for the faster solution.
ReferencedImage uses JAI RenderedOP up to rendering the image and should be therefore able to show bigger source images. never tested though.
..ede